Hey learn something new every day on this list, good info. Could the Y-cable be left in circuit on critical links, with proper precautions of course, yeah I know simpleton question but you never know. I always leave one port open on all my switches just for the sniffer, has made life so much easier and safer too, nice to know the same idea could be used on the WAN also.
Dan -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Trevor J Corness Sent: Tuesday, October 02, 2001 3:14 PM To: [EMAIL PROTECTED] Subject: Re: Sniffing Packet From the router. [7:21111] The only other way that I know of to avoid crashing the router, and getting a useful "sniff" of the WAN traffic, is to use a V.35 protocol analyzer, such as the HP Internet Advisor. This is a pricey unit, but if you do this stuff regularly (as my coworkers and I do), it is the easiest, and most presentable way to do this. Note: There is a short disruption of service while inserting and removing the V.35 Y-cable used to do this. Internet Advisor generates some very management-friendly reports, used to present findings to people of a slightly more non-technical background. It also has many VERY powerful features (think: SnifferPro-like GUI). I am sure there are other very similiar products out in the field, I am only explaining what I have used. At the present time, this is only the HP Internet Advisor. Regards, Trevor J Corness, CCNA CCDA JNCIS NNCSS MCSE Radian Communication Services Corporation http://www.radiancorp.com On September 26, 2001 07:20 am, MADMAN wrote: > You can easily hedge your bets against crashing the router by using an > extended access-list with ip packet debuging. > > Dave > > Dennis wrote: > > debug ip packet... use with extreme care, you could crash the router if > > you have lots of traffic... > > > > ""Ken"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > > Hi, > > > > > > Does anyone know how I can sniff packet from a router. Or can the > > > router redirect the packet to another Ethernet interface. Like Span > > > port on the switch. I need to capture the packet that is going across > > > the WAN > > > > interface. > > > > > Thanks. > > > > > > Ken Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=21722&t=21111 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
